feat: add flow manager, config seeding, and expanded integration tests

Flow Management Service:
- FlowManagerService (AsyncProcessor) handling list/get/start/stop flows
  and list/get blueprints via kebab-case wire format
- Default blueprint with all service topic mappings
- Pushes flow config to config service on start/stop

Config Seeding:
- seed-config.ts script pushes prompt templates (extract-relationships,
  extract-definitions, document-prompt, kg-prompt) and default flow
  definition via gateway REST API

Integration Tests:
- Librarian CRUD: add-document, list-documents, get-content, delete
- Agent query: verifies routing through gateway to agent service
- Skip flags: SKIP_LIBRARIAN=1, SKIP_AGENT=1

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ts/packages/base/src/schema/messages.ts

@@ -287,15 +287,14 @@ export interface CollectionManagementResponse {
 
 // ---------- Flow management ----------
 
-export type FlowOperation = "list" | "get" | "start" | "stop";
-
+// Flow request/response use kebab-case wire format to match the client.
+// Access fields via bracket notation: request["flow-id"]
 export interface FlowRequest {
-  operation: FlowOperation;
-  id?: string;
-  blueprint?: string;
+  operation: string;
+  [key: string]: unknown;
 }
 
 export interface FlowResponse {
   error?: TgError;
-  flows?: { id: string; status: string; blueprint?: string }[];
+  [key: string]: unknown;
 }